CN106618698A - Seven-degree-of-freedom tibia single-side external fixator - Google Patents
Seven-degree-of-freedom tibia single-side external fixator Download PDFInfo
- Publication number
- CN106618698A CN106618698A CN201610951473.9A CN201610951473A CN106618698A CN 106618698 A CN106618698 A CN 106618698A CN 201610951473 A CN201610951473 A CN 201610951473A CN 106618698 A CN106618698 A CN 106618698A
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- China
- Prior art keywords
- extension rod
- distal
- central rotational
- rotational body
- distal end
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6441—Bilateral fixators, i.e. with both ends of pins or wires clamped
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/645—Devices extending alongside the bones to be positioned comprising a framework
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6466—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod
- A61B17/6475—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod the connecting rod being threaded
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6491—Devices extending alongside the bones to be positioned allowing small-scale motion of bone ends
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
Abstract
The invention provides a seven-degree-of-freedom tibia single-side external fixator. The fixator comprises three revolute pairs at the near end, three revolute pairs at the far end and one prismatic pair, and is composed of structures of a near end spicule support, a near end intermediate rotor, a near end extending rod clip, an extending rod, a far end extending rod clip, a far end intermediate rotor, a far end spicule support and the like. The intermediate rotor is connected to an extending rod clip tooth socket through an extending rod clip gear, and the intermediate rotor achieves rotation of 360 degrees along the y axis relative to the extending rod clip; the extending rod clip is connected to the extending rod through an extending rod nut, and the extending rod clip and the extending rod achieve angle fixing of 360 degrees along the z axis; the near end revolute pairs and the far end revolute pairs have same symmetrical connections. According to the seven-degree-of-freedom tibia single-side external fixator, pose alignment of the near end tibia and the far end tibia in the x, y, z directions is achieved, the function of axial pressure adding in the later period of fracture stabilization is achieved, and the problems that a single-side fixator is small in adjusting range and poor in flexibility are solved. The seven-degree-of-freedom tibia single-side external fixator further has the advantages of being simple in structure and convenient to use.
Description
Technical field
The invention belongs to surgical medical equipment field, and in particular to a kind of seven freedom for treating fracture of tibia correction is unilateral
External fixator.
Background technology
Fracture of tibia is a kind of large numbers of common orthopaedic diseases.Administer this sick conventional method be with plaster fixing,
Traction or open reduction and Kirschner wire fixation, patient generally needs lie in bed for three months, usually causes anchylosis.With External technique
Development, exterior fixing rack become being developed rapidly in the lump for instrument important in orthopaedics therapy, wherein
Llizarov loopful formula external fixators are more projected, and are the major progress of exter-nal fixer technical field.The technology of Llizarov
Also countless orthopaedics are excited and allows doctor to the study of bone External technique, research and the interest applied.1984, Bastiani etc.
A kind of monolateral power unilateral external fixation has been invented, operation difficulty has been simplified.Ao schools also identify exter-nal fixer opening,
Using value in infected fracture, have developed a kind of tubulose external fixator.American J Charles Taylor in 1994 etc.
People is modified to " Spatial infrastructure " on the basis of llizarow annular external fixators ' (Taylor Spatial are fixed outward
Frame, abbreviation TSF), Taylor external fixators are that six telescopic connecting rods are obliquely connected to proximal-distal ring by one kind
On, and the hole ring type external fixator that can be rotated freely at tie point, the fixator is exactly famous " Taylor space frame
Frame ".
Although these external fixators have the advantages that the unique and using value of oneself, also there is itself not simultaneously
Foot, external fixator structure bulky in parallel, underaction makes patient's functional rehabilitation after surgery bring difficulty and inconvenience, due to
The early stage limitation of unilateral external fixator joint angles adjusting range causes flexibility to be restricted, single function, and treatment is big to be become
The fracture correction of shape is difficult.Therefore according to " orthopaedics Natural Reconstruction theory "：The strong fixation of fracture early implementation, fracture mid-term is provided
The flexible fastening for axially stimulating with combined stress, the later stage provides balance and fixes this theory, and design one can be solved preferably
Unilateral external fixator adjustable range is little, the problem of very flexible, unilateral external fixator is answered in large deformation fracture correction
With being significantly.
The content of the invention
It is big that the technical problem to be solved in the present invention is to provide a kind of joint adjustable range.Flexibility is big and can realize
The unilateral external fixator being association of activity and inertia, will solve the problems, such as that the correction of large deformation fracture of tibia is difficult, it is ensured that joint appointing in corner
Meaning position is realized fixing, and simple structure, easy to use.The fixator is mainly by the rotation of six decentractions is secondary and a movement
Pair composition, can realize space three-dimensional ostealleosis correct and after the fracture the phase there is the function of axial pressure.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of seven freedom shin bone unilateral external fixator, it is characterised in that：Including near-end spicule support (5), extension rod
(1), near-end central rotational body (9), near-end extension rod clamp (16), distal end extension rod clamp (27), distal end central rotational body
(29), distal bone needle rack (38)：The near-end spicule support (5) can realize x-axis 180 degree around near-end central rotational body (9)
Rotation, near-end central rotational body (9) opposite proximal end extension rod clamp (16) can realize the rotation around 360 degree of y-axis, and near-end prolongs
Long rod clamp (16) can realize the rotation around 360 degree of z-axis, near-end extension rod clamp (16) and distal end relative to extension rod (1)
Extension rod clamp (27) realizes the movement along z-axis 60mm relative to the axis of extension rod (1)；The two ends of extension rod (1) rotate
Body is symmetrical structure, and distal end extension rod clamp (27) realizes the rotation around 360 degree of z-axis relative to extension rod (1), in the middle of distal end turn
Kinetoplast (29) opposite proximal end extension rod clamp (27) realizes the rotation around 360 degree of y-axis, in distal bone needle rack (38) opposite proximal end
Between rotor (29) rotation that can realize around x-axis.
Further, the extension rod (1) is by extension rod outer bar (1-2), extension rod interior bar (1-1), threads of lead screw bar (2-
1), nut screw boss (2-2), feed screw nut (2-3), nut screw draw-in groove (2-4), leading screw bearing (3) and jump ring (4) group
Into：Hollow extension rod interior bar (1-1) is connected by screw thread and threads of lead screw bar (2-1), and the lower end of threads of lead screw bar (2-1) is
Nut screw boss (2-2), on nut screw boss (2-2), jump ring (4) is installed in leading screw bearing for leading screw bearing (3)
(3) and feed screw nut (2-3) between, extension rod outer bar (1-2) is connected by leading screw bearing (3) and nut screw boss (2-2),
Leading screw bearing (3) is fixedly connected by jump ring (4) with feed screw nut (2-3), and nut screw draw-in groove (2-4) is in feed screw nut (2-
3) bottom, realizes that relative extension rod outer bar (1-2) edge of extension rod interior bar (1-1) is prolonged by rotating nut screw draw-in groove (2-4)
Long mandrel line moves up and down motion, constitutes moving sets.
Further, the near-end spicule support (5) is by under near-end spicule pedestal upper end lid (5-1), near-end spicule support
End cap (5-2), near-end spicule support left screw (7-1), near-end spicule support right screw (7-2), near-end left side spring (6-
1), near-end right side spring (6-2) and near-end spicule support needle tray (5-3) composition：Near-end spicule pedestal upper end lid (5-1) is by near
End spicule support left screw (7-1) and near-end spicule support right screw (7-2) are with near-end spicule pedestal lower end lid (5-2) even
Connect；Near-end left side spring (6-1) is arranged in near-end spicule pedestal upper end lid left side screwed hole (5-4), near-end right side spring (6-
2) in near-end spicule pedestal upper end lid right side screwed hole (5-7), near-end spicule support left screw (7-1) and near-end bone
Needle rack right screw (7-2) is compressed on near-end spicule (8) by near-end left side spring (6-1) and near-end right side spring (6-2)
In near-end spicule support needle tray (5-3), the fixation of near-end spicule (8) is realized.
Further, the near-end spicule support (5) is by under near-end spicule pedestal upper end lid (5-1) and near-end spicule support
End cap (5-2) is constituted, and the right-hand member of near-end spicule pedestal lower end lid (5-2) is near-end spicule support rotary body (5-5), near-end spicule
Embedded teeth groove (5-6) is provided with support rotary body (5-5), the left side of near-end central rotational body (9) is present stretches out rotation portion (9-
1)；Near-end spicule support rotary body (5-5) insertion near-end central rotational body is stretched out between rotation portion (9-1) and by near-end
Between rotor gear (11) link together, near-end spicule support rotary body (5-5) is by the embedded teeth groove (5- of near-end spicule support
6) connect with near-end central rotational body gear (11), near-end splined shaft (10) is connected to one with near-end central rotational body gear (11)
Rise.
Further, the shaft end of near-end splined shaft (10) is provided with near-end splined shaft grooving surface (10-1) and near-end spline spiral shell
Line (10-2), near-end central rotational body (9) is real by rotating near-end splined shaft grooving surface (10-1) and near-end spicule support (5)
Now relatively rotate, constitute and rotate secondary.
Further, near-end central rotational body stretches out the bottom of rotation portion (9-1) concave surface (9-2), near-end spline
Bottom end bearing (14-1) is arranged on near-end central rotational body concave surface (9-2), and wherein near-end splined shaft (10) is spent by near-end
Key bottom end bearing (14-1) and near-end central rotational body stretch out rotation portion (9-1) connection, and near-end splined shaft (10) is by near-end
Spline upper end bearing (14-2) and near-end bearing (ball) cover (12) connect, and proximal end cap nut (13) is by near-end lock washer (15)
It is pressed on near-end bearing (ball) cover (12), proximal end cap nut (13) is by near-end spline thread (10-2) and near-end splined shaft
(10) connect, near-end splined shaft (10) is pressed on near-end central rotational body concave surface (9-2) by proximal end cap nut (13).
Further, there are a projecting shaft (9-3), near-end central rotational body in the lower end of the near-end central rotational body (9)
Near-end extension rod clamp gear (17) is installed on projecting shaft (9-3) side, and the near-end central rotational body (9) is prolonged by near-end
Long rod clamp gear (17) and near-end extension rod clamp (16) connect, and near-end extension rod clamp gear (17) is by near-end extension rod
Clamp teeth groove (16-1) and near-end extension rod clamp (16) connect；Near-end central rotational body (9) is by rotating near-end extension rod card
Sub- gear shaft (17-1) and near-end extension rod clamp (16) form the mutual rotation around near-end central rotational body projecting shaft (9-3),
Constitute and rotate secondary；Near-end central rotational body upper end bearing (18-1) and near is mounted with near-end extension rod clamp gear shaft (17-1)
End central rotational body bottom end bearing (18-2), the bearings at both ends is separately mounted to the upper and lower surface of proximal connecting end lid (19),
Near-end central rotational body (9) is connected by the upper surface of near-end central rotational body upper end bearing (18-1) and proximal connecting end lid (19)
Connect, proximal connecting end lid (19) is by near-end central rotational body bottom end bearing (18-2) and the lower surface of proximal connecting end lid (19)
Connection；Near-end extension rod clamp gear nut (20) is pressed on near-end central rotational body (9) by near-end check washer (21).
Further, near-end extension rod clamp bearing (22) is installed in the lower end of near-end central rotational body projecting shaft (9-3)
And on near-end extension rod clamp dimpled surface (16-3), near-end central rotational body projecting shaft (9-3) passes through near-end extension rod card
Sub- bearing (22) and near-end extension rod clamp indent hole axle (16-2) connect, and proximal connecting end lid (19) is by near-end extension rod clamp
Bearing (22) is pressed on near-end extension rod clamp dimpled surface (16-3), and near-end central rotational body projecting shaft (9-3) is by near
End extension rod clamp bearing (22) and near-end extension rod clamp indent hole axle (16-2) form relative rotation motion of driving system；Proximal connecting end
Lid (19) fastens long spiro nail (23) and is fixed on near-end extension rod clamp (16) by near-end；Near-end central rotational body (9) passes through
Near-end fastening long spiro nail (23) and near-end extension rod clamp (16) are fixed together, and near-end fastening long spiro nail (23) is by proximal lock
Tight packing ring (24) is fixed on near-end central rotational body (9).
Further, the proximal connecting end lid (19) is by proximal connecting end lid screw (25) and near-end central rotational body
(9) it is fixed together.
Further, the near-end extension rod clamp (16) is in extension rod interior bar (1-1), distal end extension rod clamp
(27) in extension rod outer bar (1-2)；Near-end extension rod clamp (16) is by near-end extension rod screw (26-2) and near-end
Extension rod nut (26-1) is fixed together with extension rod interior bar (1-1), extension rod interior bar (1-1) and near-end extension rod clamp
(16) can realize that 360 degree mutually rotate, constitute and rotate secondary；Distal end extension rod clamp (27) is by distal end extension rod screw (28-
2) it is fixed together with extension rod outer bar (1-2) with distal end extension rod nut (28-1), extension rod outer bar (1-2) and distal end extend
Rod clamp (27) can realize that 360 degree mutually rotate, and constitute and rotate secondary.
The structure of fixator is symmetrical structure, the company of the distal end extension rod clamp (27) and distal end central rotational body (29)
It is the same to connect with the connection of near-end extension rod clamp (16) and near-end central rotational body (9), is briefly described as follows.
Further, the distal end central rotational body (29) is by distal end extension rod clamp gear (30) and distal end extension rod
Clamp (27) connects, and distal end extension rod clamp gear (30) is by distal end extension rod clamp teeth groove (27-1) and distal end extension rod card
Sub (27) connection；Distal end central rotational body (29) is by rotating distal end extension rod clamp gear shaft (30-1) and distal end extension rod card
Sub (27) form the mutual rotation around distal end central rotational body projecting shaft (29-3), constitute and rotate secondary；Distal end central rotational body
(29) connected by the upper surface of distal end central rotational body upper end bearing (31-1) and Distal coupling end lid (32), Distal coupling end
Lid (32) is connected by the lower surface of distal end central rotational body bottom end bearing (31-2) and Distal coupling end lid (32)；Distal end extends
Rod clamp gear nut (33) is pressed on distal end central rotational body (29) by distal end check washer (34).Distal end central rotational
Body projecting shaft (29-3) is connected by distal end extension rod clamp bearing (35) and distal end extension rod clamp indent hole axle (27-2), far
End connection end cap (32) is pressed on distal end extension rod clamp bearing (35), and distal end central rotational body projecting shaft (29-3) is by remote
End connection end cap (32) and distal end extension rod clamp indent hole axle (27-2) form relative rotation motion of driving system；Distal coupling end lid (32)
Long spiro nail (32-1) is fastened by distal end to be fixed on distal end extension rod clamp (27)；Distal end central rotational body (29) is by distal end
Fastening long spiro nail (36) and distal end extension rod clamp (27) are fixed together, and distal end fastening long spiro nail (36) is by distal end lock pad
Circle (37) is fixed on distal end central rotational body (29)；Distal coupling end lid (32) by Distal coupling end lid screw (32-1) and
Distal end central rotational body (29) is fixed together.
The connection of the distal end central rotational body (29) and distal bone needle rack (38) and near-end central rotational body (9) and closely
The connection at end spicule support (5) is the same, is briefly described as follows.
Further, distal bone needle rack rotary body (38-4) the insertion distal end central rotational body stretches out rotation portion
(29-1) link together between and by distal end central rotational body gear (39), distal bone needle rack rotary body (38-4) passes through
Distal bone needle rack embeds teeth groove (38-5) and distal end central rotational body gear (39) connection, in distal end splined shaft (40) and distal end
Between rotor gear (39) link together；The shaft end of distal end splined shaft (40) be provided with distal end splined shaft grooving surface (40-1) and
Distal end spline thread (40-2), distal end central rotational body (29) is by rotating distal end splined shaft grooving surface (40-1) and distal bone
Needle rack (38) is realized relatively rotating, and constitutes and rotates secondary；Distal end splined shaft (40) by distal end spline bottom end bearing (41-1) and
Distal end central rotational body stretches out rotation portion (29-1) connection, and distal end splined shaft (40) is by distal end spline upper end bearing (41-2)
Connect with distal end bearing (ball) cover (42), distal end cap nut (43) is pressed on distal end bearing (ball) cover by distal end lock washer (44)
(42) on, distal end cap nut (43) is connected by distal end spline thread (40-2) and distal end splined shaft (40), distal end splined shaft
(40) distal end central rotational body is compressed by distal end cap nut (43) and stretches out rotation portion (29-1)；Distal bone needle rack upper end
Lid (38-1) is by distal bone needle rack left screw (45-1) and distal bone needle rack right screw (45-2) and distal end spicule
Pedestal lower end lid (38-2) connects；Distal bone needle rack left screw (45-1) and distal bone needle rack right screw (45-2) are logical
Cross distal left spring (46-1) and distal end spicule (47) is pressed on distal bone needle rack needle tray by Distal Right spring (46-2)
(38-3) in, the fixation of distal end spicule (47) is realized.
The present invention is due to using above technical scheme, realizing the unilateral external fixator of the large deformation reduction of the fracture, and structure
Simply, easy to use, small volume, low cost of manufacture not only ensure that the big fracture correction 360 degree of space, preferably solve
Unilateral external fixator joint adjustable range is little, very flexible the problems such as, and the unilateral external fixator is in the reduction of the fracture later stage
The function of axial pressure can be realized in fracture end, in addition the fixator can be also used for the operative treatment of tibia lengthening.
A kind of seven freedom shin bone unilateral external fixator of the present invention is described further below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is a kind of general structure schematic three dimensional views of unilateral external skeletal fixation device for tibia of the present invention；
Fig. 2 is a kind of general structure top view of unilateral external skeletal fixation device for tibia of the present invention；
Fig. 3 is a kind of extension rod section of structure of unilateral external skeletal fixation device for tibia of the present invention；
Fig. 4 is a kind of near-end spicule supporting structure profile of unilateral external skeletal fixation device for tibia of the present invention；
A kind of near-end central rotational body and near-end of Fig. 5 (a), (b), (c) respectively unilateral external skeletal fixation device for tibia of the present invention
Spicule support connection front view, top view, side view；
Fig. 6 (a), (b) are respectively a kind of near-end central rotational body and near-end spicule of unilateral external skeletal fixation device for tibia of the present invention
Support connection B-B profiles, near-end splined shaft schematic three dimensional views；
Fig. 7 is a kind of near-end central rotational body of unilateral external skeletal fixation device for tibia of the present invention and near-end spicule support connection C-C
Sectional view；
Fig. 8 (a), (b), (c), (d) are divided into a kind of near-end central rotational body of unilateral external skeletal fixation device for tibia of the present invention and near
End extension rod clamp connection front view, top view, side view, axis side view；
Fig. 9-11 is respectively a kind of near-end central rotational body and near-end extension rod card of shin bone unilateral external fixator of the invention
D-D sectional views, E-E sectional views and F-F sectional views that son connects；
Figure 12 is that a kind of near-end central rotational body of unilateral external skeletal fixation device for tibia of the present invention and the connection of near-end bearing (ball) cover are shown
It is intended to；
Figure 13 is a kind of near-end extension rod clamp of unilateral external skeletal fixation device for tibia of the present invention, distal end extension rod clamp and prolongation
Rod connection diagram；
Figure 14 is that a kind of unilateral external skeletal fixation device for tibia distal end extension rod clamp of the present invention and distal end central rotational body connection are shown
It is intended to；
Figure 15 is a kind of unilateral external skeletal fixation device for tibia distal end central rotational body of the present invention and distal bone needle rack connection signal
Figure
Figure 16 is a kind of use state schematic diagram of unilateral external skeletal fixation device for tibia of the present invention；
In Fig. 1-Figure 16：1- extension rods, 1-1-extension rod interior bar, 1-2-extension rod outer bar, 2-1-threads of lead screw bar,
2-2-nut screw boss, 2-3-feed screw nut, 2-4-nut screw draw-in groove, 3-leading screw bearing, 4-jump ring, 5-near-end
Spicule support, 5-1-near-end spicule pedestal upper end lid, 5-2-near-end spicule pedestal lower end lid, 5-3-near-end spicule support pin
Groove, 5-4-near-end spicule pedestal upper end lid left side screwed hole, 5-5-near-end spicule support rotary body, 5-6-near-end spicule
Frame embeds teeth groove, 5-7-near-end spicule pedestal upper end lid right side screwed hole, 6-1-near-end left side spring, 6-2-near-end right side
Spring, 7-1-near-end spicule support left screw, 7-2-near-end spicule support right screw, 8-near-end spicule, 9-near-end
Central rotational body, 9-1-near-end central rotational body stretches out rotation portion, and 9-2-near-end central rotational body concave surface, 9-3-near
End central rotational body projecting shaft, 10-near-end splined shaft, 10-1-near-end splined shaft grooving surface, 10-2-near-end spline spiral shell
Line, 11-near-end central rotational body gear, 12-near-end bearing (ball) cover, 13-proximal end cap nut, under 14-1-near-end spline
End bearing, 14-2-near-end spline bottom end bearing, 15-near-end lock washer, 16-near-end extension rod clamp, 16-1-near-end
Extension rod clamp teeth groove, 16-2-near-end extension rod clamp indent hole axle, 16-3-near-end extension rod clamp dimpled surface, 17-
Near-end extension rod clamp gear, 17-1-near-end extension rod clamp gear shaft, 18-1-near-end central rotational body upper end bearing,
18-2-near-end central rotational body bottom end bearing, 19-proximal connecting end lid, 20-near-end extension rod clamp gear nut, 21-
Near-end check washer, 22-near-end extension rod clamp bearing, 23-near-end fastening long spiro nail, 24-near-end lock washer, 25-
Proximal connecting end lid screw, 26-1-near-end extension rod nut, 26-2-near-end extension rod screw, 27-distal end extension rod card
Son, 27-1-distal end extension rod clamp teeth groove, 27-2-distal end extension rod clamp indent hole axle, 28-1-distal end extension rod spiral shell
Mother, 28-2-distal end extension rod screw, 29-distal end central rotational body, 29-1-distal end central rotational body stretches out rotation portion,
29-3-distal end central rotational body projecting shaft, 30-distal end extension rod clamp gear, 30-1-distal end extension rod clamp gear shaft,
31-1-distal end central rotational body upper end bearing, 31-2-distal end central rotational body bottom end bearing, 32-Distal coupling end lid,
32-1-Distal coupling end lid screw, 33-distal end extension rod clamp gear nut, 34-distal end check washer, 35-distal end is prolonged
Long rod clamp bearing, 36-distal end fastening long spiro nail, 37-distal end lock washer, 38-distal bone needle rack, 38-1-distal end
Spicule pedestal upper end lid, 38-2-distal bone needle rack bottom end cover, 38-3-distal bone needle rack needle tray, 38-4-distal end spicule
Support rotary body, 38-5-distal bone needle rack embeds teeth groove, 39-distal end central rotational body gear, 40-distal end splined shaft,
40-1-distal end splined shaft grooving surface, 40-2-distal end spline thread, 41-1-distal end spline bottom end bearing, 41-2-distal end
Spline upper end bearing, 42-distal end bearing (ball) cover, 43-distal end cap nut, 44-distal end lock washer, 45-1-distal bone
Needle rack left screw, 45-2-distal bone needle rack right screw, 46-1-distal left spring, 46-2-Distal Right bullet
Spring, 47-distal end spicule, 48-1-proximal tibia, 48-2-distal tibia, 48-3-distal bone needle rack needle tray.
Specific embodiment
As shown in Fig. 1-Figure 16, the present invention is a kind of seven freedom shin bone unilateral external fixator, with symmetrical near
Three, end rotates secondary, distal end three and rotates a secondary and moving sets, the seven freedom cascaded structure form of employing：It is main to include closely
Rotor (9), near-end extension rod clamp (16), distal end extension rod clamp (27) in the middle of end spicule support (5), near-end. distal end
Central rotational body (29), distal bone needle rack (38) and extension rod (1).In shin bone reseting procedure is carried out, first by rotation
Near-end spicule support left screw (7-1) and right screw (7-2) are fixed on proximal tibia (48-1) by near-end spicule (8)
In near-end spicule support needle tray (5-3), proximal tibia (48-1) is set to be fixedly connected with near-end spicule support (5), then by distal end
Spicule (47) is fixed in distal bone needle rack needle tray (48-3), by rotating distal end spicule support left screw (45-1) and the right side
Side screw (45-2) makes distal tibia (48-2) be fixedly connected with distal bone needle rack (38), that is, complete fixator with shin bone
Connection.
After two ends spicule support is connected with shin bone two ends, according to the dislocation of distal tibia (48-2) and proximal tibia (48-1)
Position orientation relation complete the alignment of two knochenbruch：Doctor determines near-end central rotational body (9) and near-end extension rod clamp according to X-ray
(16) the anglec of rotation, rotating near-end splined shaft (10) by spanner first makes to turn in the middle of near-end spicule support (5) opposite proximal end
Kinetoplast (9) forms the relative rotation in x-axis direction, rotates to the position of reduction of the fracture needs, and near-end spicule support (5) is by rotation
Proximal end cap nut (13) and near-end central rotational body (9) are fixed together；Near-end central rotational body (9) is near by spanner rotation
End extension rod clamp gear shaft (17-1) forms the mutual rotation in y-axis direction with near-end extension rod clamp (16), when rotating to one
Determine angle, locking near-end extension rod clamp nut (20) makes near-end extension rod clamp gear shaft (17-1) stop operating, and then
Near-end central rotational body (9) is fixed together by fastening long spiro nail (23) and near-end extension rod clamp (16)；Near-end extension rod
Clamp (16) and extension rod interior bar (1-1) form the rotation pair in z-axis direction, when near-end extension rod clamp (16) and extension rod interior bar
(1-1) certain angle is mutually gone to, by tightening near-end extension rod nut (26-1) and realizing near-end extension rod clamp (16) and prolong
The fixation of long rod interior bar (1-1) pose.
Then complete distal end three and rotate being connected with each other for pair, with medical science spanner rotating distal end extension rod clamp (27) it is made
With the rotation pair that extension rod outer bar (1-2) forms z-axis direction, when distal end extension rod clamp (27) and extension rod outer bar (1-2) shape
When angled, by tightening distal end extension rod nut (28-1) distal end extension rod clamp (27) and extension rod outer bar are realized
(1-2) pose interfixes；Distal end central rotational body (29) is by spanner rotating distal end central rotational body gear shaft (30-1)
With the mutual rotation that distal end extension rod clamp (27) forms y-axis direction, when certain angle is rotated to, distal end extension rod clamp is locked
Nut (33) makes distal end extension rod clamp gear shaft (17-1) stop operating, and then distal end central rotational body (29) is tight by distal end
Gu long spiro nail (36) and distal end extension rod clamp (27) are fixed together；And then rotating distal end splined shaft (40) makes distal end spicule
Support (38) forms the relative rotation in x-axis direction relative to distal end central rotational body (29), when rotating to certain angle, distal bone
Needle rack (38) is fixed together by rotating distal end end cover nut (43) and distal end central rotational body (29)；So far realize near
End bone photo is for the alignment procedure of distal bone.
By adjusting screw nut (2-3), proximal tibia (48-1) can be controlled relative to distal tibia (48-2) in z-axis
Position on direction, realizes the axial pressure function and Limb lengthening function in reduction of the fracture later stage.
From the foregoing, six of this unilateral external fixator rotate pair and can realize the appearance of proximal tibia opposite proximal end shin bone
State is alignd, and the moving sets in a direction can realize axial pressure function and bone lengthening function at shin bone later stage knochenbruch,
Therefore unilateral external fixator can be effectively realized shin bone and reset and fracture middle and later periods flexible fastening function.
Claims (1)
1. a kind of series connection seven freedom unilateral external fixator, it is characterised in that：Including in the middle of near-end spicule support (5), near-end turns
Kinetoplast (9), near-end extension rod clamp (16), distal end extension rod clamp (27), distal end central rotational body (29), distal bone needle rack
And extension rod (1) (38)；
The extension rod (1) is convex by extension rod outer bar (1-2), extension rod interior bar (1-1), threads of lead screw bar (2-1), nut screw
Platform (2-2), feed screw nut (2-3), nut screw draw-in groove (2-4), leading screw bearing (3) and jump ring (4) composition：Hollow extension rod
Interior bar (1-1) is connected by screw thread and threads of lead screw bar (2-1), and nut screw boss (2-2) is located at threads of lead screw bar (2-1)
Lower end, on nut screw boss (2-2), jump ring (4) is installed in leading screw bearing (3) and feed screw nut for leading screw bearing (3)
(2-3) between, extension rod outer bar (1-2) is connected by leading screw bearing (3) and nut screw boss (2-2), and leading screw bearing (3) leads to
Cross jump ring (4) to be fixedly connected with feed screw nut (2-3)；
The near-end spicule support (5) is by near-end spicule pedestal upper end lid (5-1) and near-end spicule pedestal lower end lid (5-2) group
Into near-end spicule pedestal upper end lid (5-1) is by near-end spicule support left screw (7-1) and near-end spicule support right screw
(7-2) it is connected with near-end spicule pedestal lower end lid (5-2)；Near-end left side spring (6-1) is arranged on near-end spicule pedestal upper end lid
In left side screwed hole (5-4), near-end right side spring (6-2) is arranged in near-end spicule pedestal upper end lid right side screwed hole (5-7),
Near-end spicule support left screw (7-1) and near-end spicule support right screw (7-2) are by near-end left side spring (6-1) and closely
End right side spring (6-2) is pressed on near-end spicule (8) in near-end spicule support needle tray (5-3), realizes consolidating for near-end spicule (8)
It is fixed；
The right-hand member of the near-end spicule pedestal lower end lid (5-2) is near-end spicule support rotary body (5-5), and near-end spicule support revolves
Embedded teeth groove (5-6) is provided with swivel (5-5), the left side of near-end central rotational body (9) is present stretches out rotation portion (9-1)；Closely
End spicule support rotary body (5-5) insertion near-end central rotational body is stretched out between rotation portion (9-1) and by turning in the middle of near-end
Kinetoplast gear (11) links together, near-end spicule support rotary body (5-5) by the embedded teeth groove (5-6) of near-end spicule support and
Near-end central rotational body gear (11) connects, and near-end splined shaft (10) links together with near-end central rotational body gear (11)；
The axial end of near-end splined shaft (10) is provided with near-end splined shaft grooving surface (10-1) and near-end spline thread (10-2), closely
End central rotational body (9) is realized relatively rotating by rotating near-end splined shaft grooving surface (10-1) and near-end spicule support (5),
Constitute and rotate secondary；
Near-end central rotational body stretches out the bottom of rotation portion (9-1) concave surface (9-2), near-end spline bottom end bearing (14-1)
On near-end central rotational body concave surface (9-2), wherein near-end splined shaft (10) is by near-end spline bottom end bearing (14-
1) stretch out rotation portion (9-1) and connect with near-end central rotational body, near-end splined shaft (10) is by near-end spline upper end bearing
(14-2) connect with near-end bearing (ball) cover (12), proximal end cap nut (13) is pressed on proximal shaft by near-end lock washer (15)
On socket end lid (12), proximal end cap nut (13) is connected by near-end spline thread (10-2) and near-end splined shaft (10), near-end
Splined shaft (10) is pressed on near-end central rotational body concave surface (9-2) by proximal end cap nut (13)；
There is a projecting shaft (9-3) lower end of the near-end central rotational body (9), and near-end central rotational body projecting shaft (9-3) is other
Near-end extension rod clamp gear (17) is installed on side, and the near-end central rotational body (9) is by near-end extension rod clamp gear
(17) connect with near-end extension rod clamp (16), near-end extension rod clamp gear (17) is by near-end extension rod clamp teeth groove (16-
1) connect with near-end extension rod clamp (16)；Near-end central rotational body (9) is by rotating near-end extension rod clamp gear shaft (17-
1) the mutual rotation around near-end central rotational body projecting shaft (9-3) is formed with near-end extension rod clamp (16), constitutes and rotate secondary；Closely
Near-end central rotational body upper end bearing (18-1) and near-end central rotational body are mounted with end extension rod clamp gear shaft (17-1)
Bottom end bearing (18-2), the bearings at both ends is separately mounted to the upper and lower surface of proximal connecting end lid (19), near-end central rotational
Body (9) is connected by the upper surface of near-end central rotational body upper end bearing (18-1) and proximal connecting end lid (19), near-end connection
End cap (19) is connected by the lower surface of near-end central rotational body bottom end bearing (18-2) and proximal connecting end lid (19)；Near-end prolongs
Long rod clamp gear nut (20) is pressed on near-end central rotational body (9) by near-end check washer (21)；
Near-end extension rod clamp bearing (22) is installed in the lower end of near-end central rotational body projecting shaft (9-3) and near-end extension rod
On clamp dimpled surface (16-3), near-end central rotational body projecting shaft (9-3) is by near-end extension rod clamp bearing (22) and closely
End extension rod clamp indent hole axle (16-2) connection, proximal connecting end lid (19) is pressed on near-end extension rod clamp bearing (22)
On near-end extension rod clamp dimpled surface (16-3), near-end central rotational body projecting shaft (9-3) passes through near-end extension rod clamp axle
Hold (22) and near-end extension rod clamp indent hole axle (16-2) forms relative rotation motion of driving system；Proximal connecting end lid (19) is by near-end
Fastening long spiro nail (23) is fixed on near-end extension rod clamp (16)；Near-end central rotational body (9) fastens long spiro nail by near-end
(23) it is fixed together with near-end extension rod clamp (16), near-end fastening long spiro nail (23) is fixed by near-end lock washer (24)
On near-end central rotational body (9)；
The proximal connecting end lid (19) is fixed on one by proximal connecting end lid screw (25) and near-end central rotational body (9)
Rise；
In extension rod interior bar (1-1), distal end extension rod clamp (27) is installed in prolonging for the near-end extension rod clamp (16)
On long rod outer bar (1-2)；Near-end extension rod clamp (16) is by near-end extension rod screw (26-2) and near-end extension rod nut
(26-1) it is fixed together with extension rod interior bar (1-1), extension rod interior bar (1-1) and near-end extension rod clamp (16) realize 360
Degree is mutually rotated, and is constituted and is rotated secondary；Distal end extension rod clamp (27) is by distal end extension rod screw (28-2) and distal end extension rod
Nut (28-1) is fixed together with extension rod outer bar (1-2), and extension rod outer bar (1-2) and distal end extension rod clamp (27) are realized
360 degree mutually rotate, and constitute and rotate secondary；
The structure of fixator is symmetrical structure, the connection of the distal end extension rod clamp (27) and distal end central rotational body (29) with
As the connection of near-end extension rod clamp (16) and near-end central rotational body (9) is；
The distal end central rotational body (29) is connected by distal end extension rod clamp gear (30) and distal end extension rod clamp (27),
Distal end extension rod clamp gear (30) is connected by distal end extension rod clamp teeth groove (27-1) and distal end extension rod clamp (27)；Far
End central rotational body (29) by rotating distal end extension rod clamp gear shaft (30-1) and distal end extension rod clamp (27) formation around
The mutual rotation of distal end central rotational body projecting shaft (29-3), constitutes and rotates secondary；Distal end central rotational body (29) is by distal end
Between rotor upper end bearing (31-1) and Distal coupling end lid (32) upper surface connection, Distal coupling end lid (32) is by distal end
The lower surface connection of central rotational body bottom end bearing (31-2) and Distal coupling end lid (32)；Distal end extension rod clamp gear nut
(33) it is pressed on distal end central rotational body (29) by distal end check washer (34)；Distal end central rotational body projecting shaft (29-3)
Connected by distal end extension rod clamp bearing (35) and distal end extension rod clamp indent hole axle (27-2), Distal coupling end lid (32)
It is pressed on distal end extension rod clamp bearing (35), distal end central rotational body projecting shaft (29-3) passes through Distal coupling end lid (32)
Relative rotation motion of driving system is formed with distal end extension rod clamp indent hole axle (27-2)；Distal coupling end lid (32) is grown by distal end fastening
Screw (36) is fixed on distal end extension rod clamp (27)；Distal end central rotational body (29) by distal end fasten long spiro nail (36) and
Distal end extension rod clamp (27) is fixed together；Distal coupling end lid (32) is by Distal coupling end lid screw (32-1) and distal end
Central rotational body (29) is fixed together；
The connection of the distal end central rotational body (29) and distal bone needle rack (38) and near-end central rotational body (9) and near-end bone
The connection of needle rack (5) is the same；
Distal bone needle rack rotary body (38-4) the insertion distal end central rotational body stretches out between rotation portion (29-1) and leads to
Cross distal end central rotational body gear (39) to link together, distal bone needle rack rotary body (38-4) is by distal bone needle rack
Inserted tooth groove (38-5) and distal end central rotational body gear (39) connection, distal end splined shaft (40) and distal end central rotational body gear
(39) link together；The axial end of distal end splined shaft (40) is provided with distal end splined shaft grooving surface (40-1) and distal end spline spiral shell
Line (40-2), distal end central rotational body (29) is by rotating distal end splined shaft grooving surface (40-1) and distal bone needle rack (38)
Realize relatively rotating, constitute and rotate secondary；Distal end splined shaft (40) in the middle of distal end spline bottom end bearing (41-1) and distal end by turning
Kinetoplast stretches out rotation portion (29-1) connection, and distal end splined shaft (40) is by distal end spline upper end bearing (41-2) and distal end bearing
End cap (42) connects, and distal end cap nut (43) is pressed on distal end bearing (ball) cover (42), far by distal end lock washer (44)
End end cover nut (43) is connected by distal end spline thread (40-2) and distal end splined shaft (40), and distal end splined shaft (40) is by remote
End end cover nut (43) compresses distal end central rotational body and stretches out in rotation portion (29-1)；Distal bone needle rack upper end cover (38-1)
By distal bone needle rack left screw (45-1) and distal bone needle rack right screw (45-2) and distal bone needle rack lower end
Lid (38-2) connection；Distal bone needle rack left screw (45-1) and distal bone needle rack right screw (45-2) are left by distal end
Lateral spring (46-1) and Distal Right spring (46-2) are pressed on distal end spicule (47) in distal bone needle rack needle tray (38-3),
Realize the fixation of distal end spicule (47).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610951473.9A CN106618698B (en) | 2016-10-27 | 2016-10-27 | A kind of seven freedom shin bone unilateral external fixator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610951473.9A CN106618698B (en) | 2016-10-27 | 2016-10-27 | A kind of seven freedom shin bone unilateral external fixator |
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| Publication Number | Publication Date |
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| CN106618698A true CN106618698A (en) | 2017-05-10 |
| CN106618698B CN106618698B (en) | 2019-02-19 |
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| CN201610951473.9A Expired - Fee Related CN106618698B (en) | 2016-10-27 | 2016-10-27 | A kind of seven freedom shin bone unilateral external fixator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577950A (en) * | 2018-05-04 | 2018-09-28 | 北京工业大学 | A kind of adjustable unilateral external fixator of dynamic |
| CN108969082A (en) * | 2018-06-27 | 2018-12-11 | 衡水增力医疗器械有限公司深州分公司 | A kind of auxiliary reset device of child femoral shaft fracture closed reduction |
| CN109276301A (en) * | 2018-08-09 | 2019-01-29 | 盐城日升月恒智能科技有限公司 | A kind of electronic Limb lengthening device of the novel marrow combination of inner and outside |
| CN109276299A (en) * | 2018-08-09 | 2019-01-29 | 盐城日升月恒智能科技有限公司 | A kind of belt sheave Limb lengthening device |
| CN109350206A (en) * | 2018-11-07 | 2019-02-19 | 吉林大学 | A kind of Medical hand fracture correction external fixator |
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| CN2045994U (en) * | 1988-11-19 | 1989-10-18 | 金伟 | External fastening apparatus of single-sided ball type joint |
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| WO2013176632A1 (en) * | 2012-05-23 | 2013-11-28 | Antolic Dr Vane | Modular side device with an intramedullary nail for guiding a bone during its lengthening |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577950A (en) * | 2018-05-04 | 2018-09-28 | 北京工业大学 | A kind of adjustable unilateral external fixator of dynamic |
| CN108577950B (en) * | 2018-05-04 | 2021-02-02 | 北京工业大学 | Dynamic adjustable single-side external fixator |
| CN108969082A (en) * | 2018-06-27 | 2018-12-11 | 衡水增力医疗器械有限公司深州分公司 | A kind of auxiliary reset device of child femoral shaft fracture closed reduction |
| CN109276301A (en) * | 2018-08-09 | 2019-01-29 | 盐城日升月恒智能科技有限公司 | A kind of electronic Limb lengthening device of the novel marrow combination of inner and outside |
| CN109276299A (en) * | 2018-08-09 | 2019-01-29 | 盐城日升月恒智能科技有限公司 | A kind of belt sheave Limb lengthening device |
| CN109276301B (en) * | 2018-08-09 | 2020-12-18 | 盐城日升月恒智能科技有限公司 | Intramedullary and extramedullary combined electric bone lengthening device |
| CN109276299B (en) * | 2018-08-09 | 2020-12-18 | 盐城日升月恒智能科技有限公司 | Belt pulley bone extension fixture |
| CN109350206A (en) * | 2018-11-07 | 2019-02-19 | 吉林大学 | A kind of Medical hand fracture correction external fixator |
| CN109350206B (en) * | 2018-11-07 | 2019-11-08 | 吉林大学 | A kind of Medical hand fracture correction external fixator |
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| CN106618698B (en) | 2019-02-19 |
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